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Column Grouping Grid In Ext Gwt

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Column Grouping Grid In Ext Google Web Toolkit Sample Code



  1. package com.extjs.gxt.samples.client.examples.grid;  
  2.   
  3. import java.util.ArrayList;  
  4. import java.util.List;  
  5.   
  6. import com.extjs.gxt.samples.resources.client.Resources;  
  7. import com.extjs.gxt.samples.resources.client.TestData;  
  8. import com.extjs.gxt.samples.resources.client.model.Stock;  
  9. import com.extjs.gxt.ui.client.Style.HorizontalAlignment;  
  10. import com.extjs.gxt.ui.client.event.ButtonEvent;  
  11. import com.extjs.gxt.ui.client.event.Events;  
  12. import com.extjs.gxt.ui.client.event.Listener;  
  13. import com.extjs.gxt.ui.client.store.ListStore;  
  14. import com.extjs.gxt.ui.client.widget.ContentPanel;  
  15. import com.extjs.gxt.ui.client.widget.LayoutContainer;  
  16. import com.extjs.gxt.ui.client.widget.Slider;  
  17. import com.extjs.gxt.ui.client.widget.VerticalPanel;  
  18. import com.extjs.gxt.ui.client.widget.button.Button;  
  19. import com.extjs.gxt.ui.client.widget.grid.ColumnConfig;  
  20. import com.extjs.gxt.ui.client.widget.grid.ColumnData;  
  21. import com.extjs.gxt.ui.client.widget.grid.ColumnModel;  
  22. import com.extjs.gxt.ui.client.widget.grid.Grid;  
  23. import com.extjs.gxt.ui.client.widget.grid.GridCellRenderer;  
  24. import com.extjs.gxt.ui.client.widget.grid.HeaderGroupConfig;  
  25. import com.extjs.gxt.ui.client.widget.layout.FitLayout;  
  26. import com.extjs.gxt.ui.client.widget.table.NumberCellRenderer;  
  27. import com.google.gwt.i18n.client.DateTimeFormat;  
  28. import com.google.gwt.i18n.client.NumberFormat;  
  29. import com.google.gwt.user.client.Element;  
  30. import com.google.gwt.user.client.ui.FlexTable;  
  31. public class ColumnGroupingExample extends LayoutContainer {  
  32.   
  33.   private NumberFormat currency = NumberFormat.getCurrencyFormat();  
  34.   private NumberFormat number = NumberFormat.getFormat("0.00");  
  35.   private NumberCellRenderer<Grid<Stock>> numberRenderer;  
  36.   private GridCellRenderer<Stock> change;  
  37.   private GridCellRenderer<Stock> gridNumber;  
  38.   private VerticalPanel vp;  
  39.   
  40.   @Override  
  41.   protected void onRender(Element parent, int index) {  
  42.     super.onRender(parent, index);  
  43.     numberRenderer = new NumberCellRenderer<Grid<Stock>>(currency);  
  44.     change = new GridCellRenderer<Stock>() {  
  45.       public String render(Stock model, String property, ColumnData config, int rowIndex, int colIndex,  
  46.           ListStore<Stock> store, Grid<Stock> grid) {  
  47.         double val = (Double) model.get(property);  
  48.         String style = val < 0 ? "red" : "green";  
  49.         return "<span style='color:" + style + "'>" + number.format(val) + "</span>";  
  50.       }  
  51.     };  
  52.   
  53.     gridNumber = new GridCellRenderer<Stock>() {  
  54.       public String render(Stock model, String property, ColumnData config, int rowIndex, int colIndex,  
  55.           ListStore<Stock> store, Grid<Stock> grid) {  
  56.         return numberRenderer.render(null, property, model.get(property));  
  57.       }  
  58.     };  
  59.   
  60.     vp = new VerticalPanel();  
  61.     vp.setSpacing(20);  
  62.   
  63.     createGrid(false);  
  64.     createGrid(true);  
  65.   
  66.     add(vp);  
  67.   }  
  68.   
  69.   private void createGrid(boolean widget) {  
  70.     List<ColumnConfig> configs = new ArrayList<ColumnConfig>();  
  71.   
  72.     ColumnConfig column = new ColumnConfig();  
  73.     column.setId("name");  
  74.     column.setHeader("Company");  
  75.     column.setWidth(200);  
  76.     configs.add(column);  
  77.   
  78.     column = new ColumnConfig();  
  79.     column.setId("symbol");  
  80.     column.setHeader("Symbol");  
  81.     column.setWidth(100);  
  82.     configs.add(column);  
  83.   
  84.     column = new ColumnConfig();  
  85.     column.setId("last");  
  86.     column.setHeader("Last");  
  87.     column.setAlignment(HorizontalAlignment.RIGHT);  
  88.     column.setWidth(75);  
  89.     column.setRenderer(gridNumber);  
  90.     configs.add(column);  
  91.   
  92.     column = new ColumnConfig("change", "Change", 100);  
  93.     column.setAlignment(HorizontalAlignment.RIGHT);  
  94.     column.setRenderer(change);  
  95.     configs.add(column);  
  96.   
  97.     column = new ColumnConfig("date", 125);  
  98.     if (widget) {  
  99.       Button btn = new Button("Updated");  
  100.       btn.addListener(Events.OnClick, new Listener<ButtonEvent>() {  
  101.         public void handleEvent(ButtonEvent be) {  
  102.           // stop column from getting click and causing sort  
  103.           be.cancelBubble();  
  104.         }  
  105.       });  
  106.       btn.setStyleAttribute("float", "left");  
  107.       column.setWidget(btn, "Last Updated");  
  108.     } else {  
  109.       column.setAlignment(HorizontalAlignment.RIGHT);  
  110.       column.setHeader("Last Updated");  
  111.     }  
  112.   
  113.     column.setDateTimeFormat(DateTimeFormat.getFormat("MM/dd/yyyy"));  
  114.     configs.add(column);  
  115.   
  116.     ListStore<Stock> store = new ListStore<Stock>();  
  117.     store.add(TestData.getStocks());  
  118.   
  119.     ColumnModel cm = new ColumnModel(configs);  
  120.   
  121.     cm.addHeaderGroup(0, 0, new HeaderGroupConfig("Header Grouping Example", 1, 5));  
  122.     cm.addHeaderGroup(1, 2, new HeaderGroupConfig("Stock Performance", 1, 2));  
  123.   
  124.     if (widget) {  
  125.       Slider s = new Slider();  
  126.       s.setWidth(100);  
  127.   
  128.       // ugly, but centers slider  
  129.       FlexTable tbl = new FlexTable();  
  130.       tbl.setWidth("100%");  
  131.       tbl.setHTML(0, 0, " ");  
  132.       tbl.setHTML(0, 1, "<span style='white-space: nowrap;font-size: 11px'>Slide Me:  </span>");  
  133.       tbl.setWidget(0, 2, s);  
  134.       tbl.setHTML(0, 3, " ");  
  135.       tbl.getCellFormatter().setWidth(0, 0, "50%");  
  136.       tbl.getCellFormatter().setWidth(0, 3, "50%");  
  137.       cm.addHeaderGroup(1, 0, new HeaderGroupConfig(tbl, 1, 2));  
  138.     } else {  
  139.       cm.addHeaderGroup(1, 0, new HeaderGroupConfig("Stock Information", 1, 2));  
  140.     }  
  141.   
  142.     ContentPanel cp = new ContentPanel();  
  143.     cp.setBodyBorder(false);  
  144.     cp.setIcon(Resources.ICONS.table());  
  145.     cp.setHeading(widget ? "Column Grouping with Widget" : "Column Grouping");  
  146.     cp.setButtonAlign(HorizontalAlignment.CENTER);  
  147.     cp.setLayout(new FitLayout());  
  148.     cp.setSize(600, 300);  
  149.   
  150.     Grid<Stock> grid = new Grid<Stock>(store, cm);  
  151.     grid.setStyleAttribute("borderTop", "none");  
  152.     grid.getView().setForceFit(true);  
  153.     grid.setBorders(true);  
  154.     cp.add(grid);  
  155.   
  156.     vp.add(cp);  
  157.   }  
  158. }  
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